Detailed introduction to the ROC of ASP.NET Web API in C#

Web api is a resource-oriented (ROC) self-hosting (SelfHost) interface that modifies resource status through HTTP protocol verbs The main purpose of seaconch today is to implement a simple ASP.NET Web API. Chestnut

What is Web API

Talk about REST and ASP.NET Web API

How to understand REST , RESTful

I won’t say much more about what Web API seaconch is here

web api is a resource-oriented (ROC) self-hosting that modifies resource status through HTTP protocol verbs ( SelfHost) interface

The main purpose of seaconch today is to implement a simple ASP.NET Web API chestnut

Create a new ASP.NET Web API project

1. Create a new project

2. Select Web API

3. Create a new Person class

Person class:

    /// <summary>
    /// 人
    /// </summary>
    public class Person
    {
        public int ID { get; set; }
        public string Name { get; set; }
        public int Sex { get; set; }
        public int Age { get; set; }
    }

4. Create a new Person_Context class

Person_Context class:

using System.Collections.Generic;

namespace chestnut_webapi.Models
{
    public class Person_Context : System.Data.Entity.DbContext
    {
        public Person_Context()
            : base("name=sc_db")
        { }

        public System.Data.Entity.DbSet<Person> Persons { get; set; }

        protected override void OnModelCreating(System.Data.Entity.DbModelBuilder modelBuilder)
        {
            modelBuilder.Conventions.Remove<System.Data.Entity.ModelConfiguration.Conventions.PluralizingTableNameConvention>();
        }
    }

    public class Db_Initer : System.Data.Entity.DropCreateDatabaseAlways<Person_Context>
    {
        protected override void Seed(Person_Context context)
        {
            context.Persons.Add(new Person()
            {
                Name = "毛毛",
                Age = 13,
                Sex = 1
            });

            context.Persons.Add(new Person()
            {
                Name = "团团",
                Age = 12,
                Sex = 2
            });

            base.Seed(context);
        }
    }
}

5. Configure connection string

6. Configure EF initial data

Get request for Person

1. Create a new Controller

Right-click Controllers to create an empty API

2.GET:

    public class PersonController : ApiController
    {
        Models.Person_Context person_db = new Models.Person_Context();
        public List<Models.Person> Get()
        {
            return person_db.Persons.ToList();
        }
    }

3.Call API

Here we use a small program to test the effect

POST request to Person

1.Post

Here we are in the Post API , added a new Person -> Bubu

        public List<Models.Person> Post()
        {
            Models.Person p = new Models.Person()
            {
                ID = 1,
                Name = "布布",
                Age = 5,
                Sex = 1
            };

            person_db.Persons.Add(p);

            person_db.SaveChanges();

            return person_db.Persons.ToList();
        }

2. Mini program code

I believe interested students have discovered it. In the mini program, we only modified the method by GET -> ; POST

PUT request to Person

1.PUT

        public List<Models.Person> Put()
        {
            Models.Person person = person_db.Persons.Where(p => p.Name == "团团").ToList().Single();

            person.Name = "圆圆";

            person_db.SaveChanges();

            return person_db.Persons.ToList();
        }

2. Mini program code

End

At this point, a simple ASP.NET Web API that performs HTTP GET / POST / PUT operations on Person has been presented to everyone

We can also see in the process why it is said that ASP .NET Web API is ROC? You can also see that for the WeChat applet, she only modified the request method, and then realized different operations on the Person resource.

However, we did not open the DELETE request method for the Person resource. So correspondingly, we have not opened the method of deleting Person to the outside world

Okay, that’s it for today. I believe everyone has a preliminary understanding of ASP.NET Web API

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